Water purification equipment

Abstract

The present invention provides a water purification device, which comprises: a first water path, which comprises a water inlet, a pre-filter and an ultrafiltration device, and the pre-filter is arranged between the water inlet and the ultrafiltration device; the second water path comprises reverse osmosis equipment and a water tank, and the reverse osmosis equipment is arranged between the ultrafiltration equipment and the water tank; the third water path comprises a water outlet, and the water outlet is connected with the water tank; the fourth water path comprises a first electromagnetic valve, a first interface is arranged between the ultrafiltration equipment and the reverse osmosis equipment, a second interface is arranged between the water outlet and the water tank, one end of the fourth water path is connected with the first interface, and the other end of the fourth water path is connected with the second interface. By arranging the fourth water path, variable-frequency water supply can be achieved, the water outlet amount is more stable, the filter element can be washed, and the service life of the filter element is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of water purification, in particular to a water purification device. Background Art

[0002] In the prior art, water purification involves various stages of filtration, including sediment filtration, activated carbon filtration and more advanced methods such as ultrafiltration and reverse osmosis. These stages are designed to remove pollutants from the water and make it suitable for various uses. However, there are several problems with water treatment in the whole house. On the one hand, the flow rate of the water needs to be guaranteed, and on the other hand, the service life of the filter element needs to be improved. Therefore, it is necessary to provide a whole-house water purification device to overcome the above-mentioned defects. Summary of the invention

[0003] The object of the present invention is to provide a water purification device for whole-house water treatment.

[0004] According to one aspect of the present invention, there is provided a water purification device, comprising:

[0005] A first waterway, the first waterway comprising a water inlet, a pre-filter and an ultrafiltration device, wherein the pre-filter is arranged between the water inlet and the ultrafiltration device;

[0006] A second water circuit, wherein the second water circuit comprises a reverse osmosis device and a water tank, wherein the reverse osmosis device is arranged between the ultrafiltration device and the water tank;

[0007] A third waterway, the third waterway comprising a water outlet, the water outlet being connected to a water tank;

[0008] The fourth water circuit includes a first solenoid valve, a first interface is provided between the ultrafiltration device and the reverse osmosis device, a second interface is provided between the water outlet and the water tank, one end of the fourth water circuit is connected to the first interface, and the other end of the fourth water circuit is connected to the second interface.

[0009] Preferably, the second water circuit further includes a water supply pump and a second solenoid valve disposed between the water tank and the second interface, and the water tank, the water supply pump, the second solenoid valve and the second interface are connected in sequence.

[0010] Preferably, it also includes a wastewater outlet, a first flushing valve and a second flushing valve, wherein the first flushing valve is arranged between the ultrafiltration device and the wastewater outlet, the second flushing valve is arranged between the reverse osmosis device and the wastewater outlet, and the first flushing valve and the second flushing valve are arranged in parallel.

[0011] Preferably, a third flushing valve is arranged between the pre-filter and the wastewater outlet, and the first flushing valve and the second flushing valve are all arranged in parallel with the third flushing valve.

[0012] Preferably, a wastewater ratio element is further provided between the reverse osmosis device and the wastewater outlet, and the first flushing valve, the second flushing valve and the third flushing valve are all arranged in parallel with the wastewater ratio element.

[0013] Preferably, the first water circuit further comprises a water inlet valve, a water leakage protector, a first pressure sensor, a softening device, a first water quality meter and a first flow meter which are sequentially arranged between the water inlet and the pre-filter.

[0014] Preferably, the third water circuit further comprises a post-filter element, a second pressure sensor, a second water quality meter and a second flow meter which are sequentially arranged between the water outlet and the second interface.

[0015] Preferably, the reverse osmosis device comprises a first reverse osmosis filter element and a second reverse osmosis filter element connected in parallel with each other, and a one-way valve and a third solenoid valve are provided between the reverse osmosis device and the water tank.

[0016] Preferably, the first solenoid valve is a two-way valve.

[0017] Preferably, an ultraviolet sterilization lamp and a liquid level meter are provided in the water tank.

[0018] Compared with the prior art, the water purification device provided by the present invention has the following beneficial effects:

[0019] It can realize variable frequency water supply. When the water level in the water tank is low, water is supplied directly from the rear end of the ultrafiltration equipment through the fourth water channel to ensure the water flow rate for users. It can extend the service life of the filter element, and the pure water in the water tank is extracted from the fourth water channel to reversely flush each filtering equipment to ensure the filtering efficiency of the filter membrane, reduce the replacement frequency, and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0021] Figure 1 A waterway diagram of the water purification device of the present invention;

[0022] Figure 2 A waterway diagram for supplying water to the water purification device of the present invention;

[0023] Figure 3 This is a water path diagram of the water purification device of the present invention when flushing. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0026] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0027] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0030] See also Figure 1The present invention provides a water purification device, comprising: a first water circuit L1, a second water circuit L2, a third water circuit L3 and a fourth water circuit L4. The first water circuit L1 comprises a water inlet 1, a pre-filter 2 and an ultrafiltration device 3. The second water circuit L2 comprises a reverse osmosis device 4, a water tank 5, a water supply pump 6 and a second solenoid valve 7. The fourth water circuit L4 comprises a first solenoid valve 8. The third water circuit L3 comprises a water outlet 9. Raw water is filtered from the water inlet 1 through the pre-filter 2, the ultrafiltration device 3 and the reverse osmosis device 4 in sequence and then stored in the water tank 5. The water supply pump 6 provides domestic water to users from the water tank 5 to the water outlet 9.

[0031] See also Figure 1 and Figure 2 A first interface 81 is provided between the ultrafiltration device 3 and the reverse osmosis device 4, and a second interface 82 is provided between the water tank 5 and the water outlet 9. One end of the fourth water circuit L4 is connected to the first interface 81, and the other end of the fourth water circuit L4 is connected to the second interface 82. The water supply pump 6 and the second solenoid valve 7 are arranged between the water tank 5 and the second interface 82. The water tank 5 is used to store pure water filtered by the reverse osmosis device 4. The water in the water tank 5 passes through the water supply pump 6 and the second solenoid valve 7 to the second interface 82 in sequence. A liquid level meter 51 and an ultraviolet sterilization lamp 52 are arranged in the water tank 5.

[0032] See also Figure 1 and Figure 3 , the ultrafiltration device 3 is also connected to the first flushing valve 31, and the first flushing valve 31 is connected to the wastewater port 10. The wastewater port 10 is used to discharge the wastewater after flushing the filter element. A second flushing valve 41 is provided between the reverse osmosis device 4 and the wastewater port 10. A third flushing valve 21 is provided between the prefilter 2 and the wastewater port 10. The first flushing valve 31, the second flushing valve 41 and the third flushing valve 21 are arranged in parallel with each other. A wastewater ratio element 44 is also provided between the reverse osmosis device 4 and the wastewater port 10, which is used to adjust the wastewater ratio of the reverse osmosis device 4. The wastewater ratio element 44 and the first flushing valve 31, the second flushing valve 41 and the third flushing valve 21 are all arranged in parallel. The reverse osmosis device 4 includes a first reverse osmosis filter element 42 and a second reverse osmosis filter element 43 connected in parallel with each other. A one-way valve 45 and a third solenoid valve 46 are provided in sequence between the reverse osmosis device 4 and the water tank 5.

[0033] See also Figure 2, an inlet valve 11, a water leakage protector 12, a first pressure sensor 13, a softening device 14, a first water quality meter 15 and a first flow meter 16 are sequentially arranged between the water inlet 1 and the pre-filter 2. The water leakage protector 12 is used to detect whether there is a water leakage in the water purification equipment. The softening device 14 is used to soften the water quality of the raw water. A second flow meter 91, a second water quality meter 92, a second pressure sensor 93 and a post-filter element 94 are sequentially arranged between the second interface 82 and the water outlet 9. The first water quality meter 15 is used to detect the quality of the raw water, and the second water quality meter 92 is used to detect the quality of the filtered water. In this embodiment, the post-filter element 94 is set as a carbon filter element.

[0034] When the water purification device of the present invention supplies water, the raw water passes through the water inlet 1, the water inlet valve 11, the softening device 14, and enters the pre-filter 2 for filtration, then passes through the ultrafiltration device 3, and then passes through the reverse osmosis device 4 to become pure water and is stored in the water tank 5. The water supply pump 6 draws the water in the water tank 5, and the water passes through the second solenoid valve 7 and the post-filter element 94 in sequence and flows out from the water outlet 9. The liquid level meter 51 detects the water level of the pure water in the water tank 5. When the liquid level in the water tank 5 decreases and the water pressure is insufficient, in order to ensure the water use of the user, the first solenoid valve 8 is opened, and the water filtered by the ultrafiltration device 3 directly passes through the first solenoid valve 8 from the first interface 81 to the second interface 82, and is supplied to the user together with the water in the water tank 5.

[0035] In this embodiment, the second solenoid valve 7 is not energized when the water level in the water tank 5 is high, the second solenoid valve 7 is normally open, and the water in the water tank 5 can flow normally to the water outlet 9. When the water level in the water tank 5 is low, the second solenoid valve 7 is closed after being energized, and the water in the water tank 5 cannot pass through the second solenoid valve 7. The water filtered by the ultrafiltration device 3 is supplied to the water outlet 9 through the fourth water path L4. The fourth water path L4 of the present invention can realize the variable frequency water supply of the water purification device, and provide pure water or direct drinking water to users according to the supply and demand situation.

[0036] See also Figure 3 The present invention is provided with a first flushing valve 31, a second flushing valve 41 and a third flushing valve 21 to flush the filter membranes of the prefilter 2, the ultrafiltration device 3 and the reverse osmosis device 4. When the first flushing valve 31 is opened, after flushing the filter membrane of the ultrafiltration device 3, the wastewater passes through the first flushing valve 31 and is discharged from the wastewater port 10. When the second flushing valve 41 is opened, after flushing the first reverse osmosis filter element 42 and the second reverse osmosis filter element 43 of the reverse osmosis device 4, the wastewater passes through the second flushing valve 41 and is discharged from the wastewater port 10. When the third flushing valve 21 is opened, the filter membrane of the prefilter 2 is flushed, and the wastewater passes through the third flushing valve 21 and is discharged from the wastewater port 10.

[0037] The fourth water path L4 of the present invention can also realize backwashing of the pre-filter 2 and the ultrafiltration device 3 and pure water flushing of the reverse osmosis device 4. After the first solenoid valve 8 is opened, the pure water in the water tank 5 is pumped out by the water supply pump 6 and passes through the second solenoid valve 7, the second interface 82, and the first solenoid valve 8 to reach the first interface 81. Pure water flows from the first interface 81 into the ultrafiltration device 3 for reverse flushing, and the waste water passes through the first flushing valve 31 to reach the waste water port 10. Pure water flows from the first interface 81 through the ultrafiltration device 3 into the pre-filter 2 for reverse flushing, and the waste water passes through the third flushing valve 21 to reach the waste water port 10.

[0038] Pure water flows into the reverse osmosis device 4 from the first interface 81, and the first reverse osmosis filter element 42 and the second reverse osmosis filter element 43 are rinsed with pure water, and the waste water reaches the waste water port 10 through the second flushing valve 41. The one-way valve 45 can prevent the water filtered by the reverse osmosis device 4 from flowing back. During the flushing process, the third solenoid valve 46 is closed to ensure that water does not enter the water tank 5 when flushing the filter element. The fourth waterway L4 of the present invention increases the service life of the filter element of the pre-filter 2, the ultrafiltration device 3 and the reverse osmosis device 4, ensures the filtering efficiency, and is convenient for family use.

[0039] It will be apparent to those skilled in the art that various modifications and variations may be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A water purification device, characterized in that: include: A first waterway, the first waterway comprising a water inlet, a pre-filter and an ultrafiltration device, wherein the pre-filter is arranged between the water inlet and the ultrafiltration device; A second water circuit, wherein the second water circuit comprises a reverse osmosis device and a water tank, wherein the reverse osmosis device is arranged between the ultrafiltration device and the water tank; A third waterway, the third waterway comprising a water outlet, the water outlet being connected to a water tank; The fourth water circuit includes a first solenoid valve, a first interface is provided between the ultrafiltration device and the reverse osmosis device, a second interface is provided between the water outlet and the water tank, one end of the fourth water circuit is connected to the first interface, and the other end of the fourth water circuit is connected to the second interface.

2. The water purification device according to claim 1, characterized in that: The second water circuit also includes a water supply pump and a second solenoid valve disposed between the water tank and the second interface. The water tank, the water supply pump, the second solenoid valve and the second interface are connected in sequence.

3. The water purification device according to claim 2, characterized in that: It also includes a wastewater outlet, a first flushing valve and a second flushing valve, wherein the first flushing valve is arranged between the ultrafiltration device and the wastewater outlet, the second flushing valve is arranged between the reverse osmosis device and the wastewater outlet, and the first flushing valve and the second flushing valve are arranged in parallel.

4. The water purification device according to claim 3, characterized in that: A third flushing valve is arranged between the pre-filter and the wastewater outlet, and the first flushing valve and the second flushing valve are all arranged in parallel with the third flushing valve.

5. The water purification device according to claim 4, characterized in that: A wastewater ratio element is also provided between the reverse osmosis equipment and the wastewater outlet, and the first flushing valve, the second flushing valve and the third flushing valve are all arranged in parallel with the wastewater ratio element.

6. The water purification device according to claim 5, characterized in that: The first water circuit also includes a water inlet valve, a water leakage protector, a first pressure sensor, a softening device, a first water quality meter and a first flow meter which are sequentially arranged between the water inlet and the pre-filter.

7. The water purification device according to claim 6, characterized in that: The third water circuit also includes a post-filter element, a second pressure sensor, a second water quality meter and a second flow meter which are sequentially arranged between the water outlet and the second interface.

8. The water purification device according to claim 7, characterized in that: The reverse osmosis device comprises a first reverse osmosis filter element and a second reverse osmosis filter element connected in parallel with each other. A one-way valve and a third solenoid valve are arranged between the reverse osmosis device and the water tank.

9. The water purification device according to claim 1, characterized in that: The first solenoid valve is a two-way valve.

10. The water purification device according to claim 1, characterized in that: An ultraviolet sterilization lamp and a liquid level meter are arranged in the water tank.

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